1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Oksi-84 [34.3K]
3 years ago
11

-3(-6u+6)-3u=5(u-2)-3

Mathematics
1 answer:
riadik2000 [5.3K]3 years ago
5 0

Answer:

u=1/2

Step-by-step explanation:

-3(-6u+6)-3u=5(u-2)-3

18u-18-3u=5u-10-3

15u-18=5u-13

15u-5u-18=-13

10u-18=-13

10u=-13+18

10u=5

u=5/10

simplify

u=1/2

You might be interested in
Suppose there are 200 lockers and 200 students. Kayla reasons that since there are 10
Rus_ich [418]

Answer:

Kayla's reasoning is not correct.

Step-by-step explanation:

The locker problem is as follows:

Imagine you are at a school that has student lockers. There are 200 lockers, all shut and unlocked, and 200 students. Suppose the first student goes along the row and opens every locker. The second student then goes along and shuts every other locker beginning with number 2. The third student changes the state of every third locker beginning with number 3. (If the locker is open the student shuts it, and if the locker is closed the student opens it). The fourth student changes the state of every fourth locker beginning with number 4. Imagine that this continues until the 200 students have followed the pattern with the 200 lockers. At the end, which lockers will be open and which will be closed? Why?

Solution:

So from the information we know that the first student goes along the row and opens every locker.

Then the second student shuts every other locker, i.e. locker numbers 2, 4, 6, 8, 10, ..., 196, 198 and 200.

Then the third students changes the state of every third locker, i.e. he/she closes an open locker and opens a closed locker.

So the open lockers are: 1, 5, 6, 12,...

Then the fourth students changes the state of every fourth locker.

So the open lockers are: 1, 4, 5, 6, 8,....

So, on we will observe that the open lockers have a perfect square number such as, 1, 4, 9, 16,....

Consider that the pattern is as follows:

Student 1 opens the locker, Student 2 closes it, Student 3 opens it, person 4 Student and so on.

This is because the square numbers always have an odd number of factors, which leads them to be open at the end.

Take any locker number, 40, for example. Its state (open or closed) is changed for every student whose number in line is a factor of the locker number.

Student      Locker 40 status

     1                    Open

     2                   Close

     4                   Open

     5                   Close

     8                   Open

     10                  Close

    20                  Open

    40                  Close

Like all other lockers numbered with non-square numbers, it ends up closed after all the students have gone through the line because it has an even number of factors.

Consider the locker number 16:

Student      Locker 16 status

     1                    Open

     2                   Close

     4                   Open

     8                   Close

     16                  Open

Thus, we can conclude that all the doors with square numbers on them will remain open because all square numbers have an odd number of factors and the doors with non-square numbers on them will remain close because they have even number of factors.

There will be a total of 14 lockers open.

1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169 and 196

So, if there are 10 lockers open in the first 100 lockers there must be only 4 other lockers opened in the next 100.

5 0
3 years ago
Two pizza delivery drivers compared the mean numbers of deliveries they completed in one day​
fiasKO [112]
The word of God has a profound way of encouraging its readers to be strong and courageous in the midst of tumultuous circumstances. These inspirational quotes are a great starting point for morning prayers and hope-filled conversations. Use them as an ever-present reminder all things are possible with God, and His mercies are new every morning.
4 0
2 years ago
Si Jose recarga su teléfono con ₡6000 y realiza 5 llamadas de 4 minutos, 3 llamadas de 6 minutos y manda 20 mensajes ¿cuanta rec
xenn [34]

Answer:

3220

Step-by-step explanation:

5x4=20

3x6=18

20+18=38

1=60

38x60=2280

20x25=500

2280+500=2780

6000-2780=3220

8 0
3 years ago
20x100/2???????????????????????????????????????????????????????????????????????????????
Nezavi [6.7K]

Answer: 1000

Step-by-step explanation:

20x100=2000 and then 2000/2=1000

7 0
3 years ago
Read 2 more answers
Jason jogged 2/3 mile in 1/3 hour. What was his speed in miles per hour?
fenix001 [56]

Answer:

I honestly was having the worst time trying to solve this sorry :(, for real idk if any of these are right

i got 2 answers; 1st: ≈0.5 mph

the 2nd; 2 mph

Step-by-step explanation:

Speed = \frac{Distance}{Time}

2/3 miles = 3520 feet

1/3 hours = 20 minutes

------Make a proportion-----

\frac{3520ft}{20min} = \frac{1 mi=5280 ft}{1hr = 60min}

cross multiply------

3520 * 60 = 211200

5280 * 20 = 105600

Divide \frac{211200}{105600}= 2

---(this is where i got confused cuz 2 doesn't make any sense)--

If you flip them, \frac{105600}{211200}=0.5 which makes more sense

hope i helped :(

7 0
3 years ago
Other questions:
  • Automated manufacturing operations are quite precise but still vary, often with distribution that are close to Normal. The width
    5·1 answer
  • Please help with my homework. It should be easy
    15·1 answer
  • A new housing development has 2 sections from which to choose. Each section has 4 rows of homes, and each row contains 12 houses
    7·1 answer
  • Please help me with this question:)
    11·1 answer
  • the probability that your ticket will be chosen in a drawing is 6%. there are 250 tickets in the drawing. how many tickets are y
    13·2 answers
  • I really need help guys what is the verbal expression for these I made this question
    10·1 answer
  • A line segment has endpoints at (-4,-6) and (-6,4). Which reflection will produce an image with endpoints at (4,-6) and (6,4)?
    13·1 answer
  • First person to answer this gets BRAINLIEST!<br> (Look at the photo for the question)
    11·2 answers
  • Which number is between 1.2 and 1.3?
    12·1 answer
  • 8x+9y=60 2x-9y=-30 elimation method
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!